Microdermabrasion System with Ergonomic Handle

ABSTRACT

A microdermabrasion system includes an applicator tool including a central handle portion with a treatment tip at a distal end of the handle, where the treatment tip includes an abrading surface formed on a front surface of the tip. A proximal end of the elongated handle is coupled to first and second arms, forming an opening in the hand piece through which a user can insert one or more fingers. The handle supports a bottom side of a user&#39;s finger while the user grips the handle. In an implementation, the handle includes an indentation for at least one finger. In an implementation, the treatment tip is removable and replaceable.

BACKGROUND OF THE INVENTION

The invention relates to the field of devices to treat human skin andmore specifically to a microdermabrasion tool.

As people age, they look for ways to maintain a youthful appearance.Some invasive cosmetic techniques include surgical approaches includingeye lifts, face lifts, skin grafts, and breast lifts. However, theseinvasive techniques also have risks and potential complications. Somepeople have died during cosmetic surgery operations. Therefore, it isdesirable to have noninvasive cosmetic techniques.

A noninvasive technique for obtaining a more youthful appearance isthrough microdermabrasion. Microdermabrasion is a process for removingdead cells from the outermost layer of the skin (the epidermis) toprovide a younger and healthier looking appearance, remove wrinkles,clean out blocked pores, remove some types of undesirable skinconditions that can develop, and enhance skin tone.

The process of microdermabrasion must be performed with a certain degreeof accuracy, so that underlying live layers of skin tissue are notremoved or damaged, but that enough dead cells are removed to giveeffective results. There is a continuing demand for microdermabrasionsystems that are easier, safer, and more comfortable to use. Therefore,there is a need for improved system, devices, and techniques forperforming microdermabrasion.

BRIEF SUMMARY OF THE INVENTION

A microdermabrasion system includes an applicator tool including acentral handle portion with a treatment tip at a distal end of thehandle, where the treatment tip includes an abrading surface formed on afront surface of the tip. A proximal end of the elongated handle iscoupled to first and second arms, forming an opening in the hand piecethrough which a user can insert one or more fingers. The handle supportsa bottom side of a user's finger while the user grips the handle. In animplementation, the handle includes an indentation for at least onefinger. In an implementation, the treatment tip is removable andreplaceable.

A system for performing microdermabrasion is provided which includes anapplicator tool having an abrasive tip with at least one openingtherethrough, the tip being adapted to contact the skin of a patient; anabrasive member located internally of the applicator tool, and means forapplying vacuum through the at least one opening, where upon applicationof vacuum a portion of the skin is drawn into contact with the abrasivemember.

A wide variety of abrasive tips may be used with the system. This mayinclude, for example, different types of abrasive elements such asbristles, meshes, abrasive particles, or combinations of these. Abrasivetipped devices or rotating brushes and cylinders coated with abrasiveparticles, can be used to remove skin layers. In a specificimplementation an abrasive treatment tip is coated with diamond dust ona front surface. The tip can rotate. Many different sizes of tips areavailable. Thus, small skin surfaces such as the cheek, forehead, chin,and nose may be treated. Large surfaces such as the back, arms, or torsomay also be treated.

In implementations, the treatment tip is designed to be removable andinstallable by the user. Further, the user can dispose of used or oldtips or holders, or both, and easily replace them with new (or clean)ones. Also, the user can remove the tips to clean them or clean thepassages to ensure the flow, vacuum and fluid, are clear, so that themicrodermabrasion device will be operating at full efficiency. Also, inan embodiment, the tip and tip holder are designed to be low cost (e.g.,made of less expensive materials) and disposable.

A microdermabrasion system includes an applicator tool (e.g., a handpiece) including a handle portion with a tip at a distal end of thehandle, where the tip includes an abrading surface formed on a frontsurface of the tip, a proximal end of the handle, opposite the tip,where the proximal end is coupled to first and second arms. The armsform a gap, which includes a closed gap end and an open gap end. In aspecific implementation, the first and second arms are positioned tocurve around sides of at least one finger.

In an implementation, the handle includes an indentation (or adepression, notch, or groove) positioned on the handle to allow theindex finger to rest in the indentation. The indentation can be acircular or oval shape to conform to the contours of the index finger.In other implementations, the indentation can include a textured pad toprovide additional grip for the index finger. The handle can include oneor more additional indentations for the thumb and middle finger to restin.

A method of performing microabrasion is provided which includes:inserting at least one finger through a gap between two arms of a handpiece; applying a treatment tip to a skin surface; providing negativepressure through an opening in the treatment tip to establish a relativevacuum; drawing a portion of the skin surface through the opening andinto contact with an abrasive member; and moving the treatment tip overthe skin surface and microabrading the portion of the skin in contactwith the abrasive member.

Microabraded skin particles are collected through a vacuum conduitthrough which the negative pressure is provided. Fluid may be applied tothe skin though the opening in the treatment tip. In such instances, thevacuum conduit will also collect excess fluid.

The vacuum provided by the negative pressure surrounds a perimeter ofthe abrasive, moderately abrasive or non-abrasive channel seal member.In a microabrasion application, this makes it so that microabraded skinparticles are collected downstream of the abrasive member and from alllocations surrounding the abrasive member. In other applications (butalso in microdermabrasion), such an arrangement assists in the abilityto move the device in any direction over the skin. The symmetric natureof the configuration avoids such need as experienced with otherimplements that have a certain directionality requirement (i.e., theymust “point” in their direction of travel). In a microdermabrasionapplication, the present device configuration provides for applying notonly any abrasive compounds as may be desired directly and immediatelyat the spot of abrasion, but also (or alternatively) other solutions orcompounds offering various benefit(s).

Other objects, features, and advantages of the present invention willbecome apparent upon consideration of the following detailed descriptionand the accompanying drawings, in which like reference designationsrepresent like features throughout the figures.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows block diagram of a microdermabrasion system.

FIG. 2 shows an illustration of a microdermabrasion system.

FIG. 3 shows a specific implementation of a hand piece.

FIG. 4 shows a cross-section of a specific implementation of a handpiece.

FIG. 5 shows another cross section of a specific implementation of ahand piece.

FIG. 6 shows a perspective view of a specific implementation of a handpiece with a bristled tip and an elongated handle.

FIG. 7 shows a perspective view of a specific implementation of a handpiece without a bristled tip and a tip holder attached.

FIG. 8 shows a perspective view of a specific implementation of a handpiece with a bristled tip placed onto a cannula.

FIGS. 9A-9B show a comparison of specific implementations of a handpiece.

FIG. 10 shows a perspective view of a specific implementation of a handpiece.

FIG. 11 shows a top view of a specific implementation of a hand piece.

FIG. 12 shows a bottom view of a specific implementation of a handpiece.

FIG. 13 shows a bottom perspective view of a specific implementation ofa hand piece.

FIG. 14 shows another bottom view of a specific implementation of a handpiece.

FIG. 15 shows a side view of a specific implementation of a hand piece.

FIG. 16A shows an illustration of a specific embodiment of a treatmenttip.

FIG. 16B shows an example of a specific embodiment of a treatment tip inuse.

FIG. 16C shows another example of a specific embodiment of a treatmenttip in use.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 is a simplified block diagram of a microdermabrasion ordermabrasion system 100. The system has internal components 105including a security block 110 that controls a security feature of thesystem. During a microdermabrasion treatment, a user 115 holds a handpiece or hand piece 120 and runs the hand piece over a patient's 125skin to exfoliate it. The user may be a doctor, technician, operator, oraesthetician. After treatment, the patient leaves with a more youthfuland healthful appearance.

FIG. 2 shows an overview of the flow of a microdermabrasion system 200.A vacuum line 202 is connected to a wand or hand piece 120. Vacuum line202 connects to an input 206 to a collection reservoir 208 via an elbow210, for example. An output 212 connects with a second vacuum line 214via an elbow 216, for example. A manifold cover 218 seals the input(206, 210) and output (212, 216) connections with collection reservoir208 which is typically a jar made of glass or plastic, for example. Anextension tube 220 connects with inputs 210 and 206 and extends into thecollection reservoir. The collection reservoir holds the waste materials(e.g., abraded skin particles and, optionally, fluids) from themicrodermabrasion process.

Optionally, a filter 222 may be provided between second vacuum line 214and a third vacuum line 224 which connects to a vacuum source 226.Filter 222 ensures that no fluid, skin particles, abrasive particles, orother materials collected by collection reservoir 208 are transported tovacuum source 226.

Any type of filter may be used. For example, in a specific embodiment,filter 222 is an in-line condensation or hydrophobic filter, such as awater condenser produced by Wilkerson Labs and available as part numberF0001-000 from Nor-Cal Controls, Incorporated of San Jose, Calif.

Vacuum source 226 may be any type of vacuum source such as a vacuumpump, an ejector (e.g., single-stage ejector and multi-stage ejector),or a vacuum blower. In an implementation, the vacuum source createsnegative pressure compared to the pressure at the hand piece tip, sothat there is suction at the tip (i.e., there is a pressure differencebetween the pressure at the vacuum source and tip). Because of thissuction or negative pressure, air, fluid, particles, and other matter atthe tip are drawn to the vacuum source (through the collectionreservoir). Further, in an implementation, the negative pressure alsodraws fluid out of a first fluid reservoir 228, a second fluid reservoir230, or both to the tip, where is it pulled back into the collectionreservoir. The suction is a fluid path that can conduct any fluid,including liquids or gases.

An example of a microdermabrasion device capable of delivering fluids toskin is the SilkPeel® Dermalinfusion® system by Envy Medical, Inc.™.Vacuum source 226 may generate a vacuum pressure from about −1 pound persquare inch to about −14 pounds per square inch. For example, the vacuumpressure may be about −3, −4, −5, −6, −7, −8, −9, −10, −11, −12, −13, ormore than −14 pounds per square inch. In some embodiments, the vacuumpressure may be less than 1 pound per square inch.

Vacuum source 226 may include a vacuum pressure adjustment control sothat a user can vary the vacuum pressure. In a specific embodiment, thevacuum pressure adjustment control is a knob that can be rotated tochange the vacuum pressure. In other embodiments, the vacuum pressureadjustment control is one or more push buttons, a slider bar, or other.A vacuum pressure gauge may indicate the current vacuum pressure. In aspecific embodiment, the vacuum pressure gauge is a digital gauge. Inanother embodiment, the vacuum pressure gauge is a dial gauge. In yetanother embodiment, the vacuum pressure adjustment may be a soft buttondisplayed on a touch screen graphic user interface. Such user interfacemay be a panel embedded in the console of the device itself or anapplication running on a separate tablet computer and communicating withthe microdermabrasion machine via a connection (e.g., USB, Bluetooth, orWi-Fi interface). Likewise, the vacuum pressure gauge may be displayedon the same panel.

In a specific embodiment, vacuum source 226 includes a fluid flowadjustment control so that a user can vary the fluid flow settings. Thefluid flow may range from about 0 milliliters per minute to about 140milliliters per minute. For example, the fluid flow may be about 10, 20,30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130 milliliters, or more than140 milliliters per minute. In a specific embodiment, the fluidadjustment control is a knob that can be rotated to change the fluidflow. A fluid may be a liquid or gas. In other embodiments, the flowadjustment control is one or more push buttons, a slider bar, or other.

The flow control may be located in the console of the machine, the fluiddelivery lines, or the handpiece itself. A fluid flow gauge may indicatethe current flow rate. In a specific embodiment, the fluid flow gauge isa digital gauge. In another embodiment, the fluid flow gauge is a dialgauge. Flow rate may be measured as a function of millimeters per minuteor as percentage of total flow rate capacity (0-100 percent). In anotherembodiment, the flow adjustment may be a soft button displayed on atouchscreen graphic user interface. Such user interface may be a panelembedded in the console of the device itself or an application runningon a separate computer (e.g., laptop, desktop, or tablet computer) andcommunicating with the microdermabrasion machine via a connection (e.g.,USB, Bluetooth, or Wi-Fi interface). Likewise, the flow rate gauge maybe displayed on the same panel.

Hand piece 120 includes a tip holder 232 which holds a tip 234. A firstfluid delivery line 238 extends from hand piece 120 and connects to anoutput 240 of first fluid reservoir 228 via an elbow 242, for example.

A breather line 244 may be connected in-line via a joint 246, forexample, or other interconnection, and includes an adjustable valve 248or other means for varying an amount of air that is allowed into firstfluid delivery line 238. This feature allows, for example, the amount ofvacuum pressure to be adjusted for a given fluid and allows fluidshaving different viscosities to be applied at the same vacuum pressurelevel, since different viscosities will require varying amounts of airto be introduced into breather line 244 to produce a constant vacuumpressure level.

Alternatively, a breather line or input with adjustment valve may belocated on elbow 242 or directly on a manifold cover 250. Still further,a valve or other flow control mechanism 236 may be provided on handpiece 120 or in first fluid delivery line 238 to control the amount offluid passing through the line. This feature can be providedalternatively, or in addition to breather line 248 discussed above.

The flow control mechanism or valve allows, for example, the user toturn off the flow of fluid to the hand piece so that the user can cleanor replace the tip if it becomes clogged. The fluid flow controlmechanism may be located on the hand piece as shown in FIG. 2 oranywhere along the fluid flow path such as on first fluid delivery line238. Generally, however, the fluid flow control valve will be located onthe hand piece or near the hand piece so that the user can quickly turnoff the flow of fluid.

An input may be provided in manifold cover 250 which may be open to theatmosphere to prevent vacuum buildup in first fluid reservoir 228.Manifold cover 250 seals output (240, 242) connections with first fluidreservoir 228 which is typically a jar made of glass or plastic, forexample, and contains lotions, vitamins, other skin treatment fluids, orcombinations of these to be applied to the skin by hand piece 120. Anextension tube 252 connects with output 240, 242 and extends into thefirst fluid reservoir to near the bottom of the first fluid reservoir toensure that most all of the contents of the fluid reservoir are capableof being delivered through the system.

In a specific embodiment, second fluid reservoir 230 is also included. Asecond fluid delivery line 254 connects the second fluid reservoir tojoint 246. Joint 246 may further include a valve to block or to permitthe flow of fluid from the second fluid reservoir into first fluiddelivery line 238.

The first fluid reservoir may include contents that are the same ordifferent from the first fluid reservoir. For example, the first fluidreservoir may include topical anesthetics and the second fluid reservoirmay include disinfectants. In various implementations, there are anynumbers of fluid reservoirs. For example, an implementation may havemore than two fluid reservoirs, such as three, four, five, six, seven,or more than seven fluid reservoirs. In such an embodiment, a valvecoupled to a manifold would be used to select one or more of thesolutions to enter main fluid delivery line.

Having more than one fluid reservoir allows, for example, differenttypes of fluids to be used to treat different types of skin conditionsthat the patient may have without requiring the user to constantlyremove the existing fluid reservoir and replace it with a new fluidreservoir that contains the appropriate fluid. For example, a patientwith oily skin may require a different treatment regime than a patientwith dry skin. The patient with the oily skin may thus be treated withfluid from the first fluid reservoir in which the fluid does not containany oil-based products because such oil-based products may worsen thepatient's skin condition. The patient with the dry skin may instead betreated with fluid from the second reservoir in which the fluid mayinclude oil-based products to help moisturize the skin. In the case ofmultiple branched fluid delivery lines feeding a main fluid deliveryline, the advantage therein would be to customize the mix of the fluidsbeing delivered to the skin, wherein the patient may be treated with aspecific mix of the various fluids simultaneously.

Abrasive particles, such as corundum crystals, sodium bicarbonateparticles or other abrasive particles, including those discussed in U.S.Pat. No. 5,971,999 (which is incorporated by reference), for example maybe included in the fluid reservoirs for delivery through the system toperform a microdermabrading function. However, in the system in thisapplication, microdermabrasion is accomplished typically via a bristledtip, abrasive tip, or both. If used, the abrasive particles may be usedtogether with any of the fluids mentioned above, with some other fluidcarrier medium, such as those described in U.S. Pat. No. 5,971,999, forexample, or both.

The fluid reservoirs may contain solution or a suspension for purposesother than abrasion or pure abrasiveness. The compositions used in thesystem can include a wide and diverse range of components. TheInternational Cosmetic Ingredient Dictionary and Handbook, 15^(th)edition, 2011, which is incorporated by reference, describes anextensive variety of cosmetic and pharmaceutical ingredients commonlyused in the skin care industry, which are suitable for use in thecompositions of the system.

General examples, types or categories, or both, of compounds that may beemployed include: bleaching formulations (e.g., 2 percent to 4 percenthydroquinone, 2 percent kojic acid, 1 percent vitamin K, decapeptide-12or other skin brightening peptides, and 1 percent hydrocortisone in anaqueous base); acne treatment formulations (e.g., salicylic acid,alcohol base buffered by witch hazel, bakuchiol and bisabolol, andothers); fine lines/wrinkle treatment formulations (e.g., hyaluronicacid in an aqueous base); hydrating formulations (e.g., calendula,vitamins A, D, E, or other vitamins, or combinations of these in amineral oil base); antioxidant formulations; free radical scavengers(e.g., vitamins A, E, K, or other vitamins, or combinations of these ina mineral oil base); pH adjusters; sunscreen agents; tanning agents andaccelerators; nonsteroidal anti-inflammatory actives (NSAIDS);antimicrobial and antifungal agents; moisturizers; lightening agents;humectants; numbing agents; retinol (e.g., 0.2 percent to about 0.6percent concentration); and water, or combinations of these.

The solution or suspension may contain extracts such as those fromplants, vegetables, trees, herbs, flowers, nuts, fruits, animals, orother organisms, or combinations of these. Such extracts may be used tohelp condition the skin, provide a relaxing aroma, or both.

The solution or suspension may also contain viscosity increasing ordecreasing agents, colorants, or combinations of these. In a specificimplementation, the viscosity of the fluids used is about 1 centipoise(e.g., about 0.5 to 1.5 centipoise). However, in other implementations,the viscosity may range from 0.1 centipoise to 500 centipoise. Theviscosity may be, for example, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9,1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 10, 20, 30, 40, 50, 60, 70, 80, 90, ormore than 100 centipoise. In other applications the viscosity may beless than 0.1 centipoise.

In a specific implementation, the fluids, abrasive particles, or bothfor the fluid reservoirs may be packaged as a concentrated solution,powder, solids, or combinations of these to be mixed, diluted, or bothby the microdermabrasion system, user, or both.

Other examples of product categories that may be employed alone or incombination with other compounds include, antiseptics, disinfectants,astringents, cleansers, pore decongestants, balms, botanicals, collagenstimulators, herbs, microemulsifiers, oxygen delivery vehicles,proteins, serums, skin firming agents, toners, topical anesthetics,emulsions, ointments, gels, tyrosinase inhibitors, and other relatedproduct categories.

Individually named products that may be used (with associated benefitindicated parenthetically) include: Aloe Vera (calming); alpha hydroxyacids (peel); alphalipoic acid (antioxidant); benzoil and otherperoxides (acne); ceramide (hydrator); copper (toning); copper peptide(toning); CoQ-10 (coenzyme Q-10) and other enzymes (toning); cortisone(calming); glycolic acids (peel); hyaluronic acid (collagenstimulation); hydrolipids (hydrator); hydroquinones (bleaching); lacticacids (peel); magnesium ascorbic phosphate (free radical scavenger,collagen stimulator, bleaching); niacin (vascular dilation);phospholipids (moisturization); potassium (toning, psoriasis), andsalicylic or glycolic acids (acne); and related products. Of course, anycombination of such elements may be provided—even in connection withabrasive particles.

Any of the products listed may be used with the microdermabrasiontreatment tips of the system. For example, the groves of a tip may beused to conduct botanicals, Aloe Vera, or alpha hydroxy, to name a fewexamples, to a patient's skin. The channels through which fluid isdelivered may be partially formed in tip 234 and partially formed in tipholder 232. When tip 234 and tip holder 232 are put together, thegrooves in each of these mate to form a complete channel opening.

As another example, coenzyme Q-10, lactic acids, or vitamin E, to name afew examples, may be conducted through an opening, surrounded bybristles, to the skin of a patient. The opening may extend to a positioncloser to patient's skin through a cylindrical column, nipple, or otherstructure to achieve a similar purpose.

Note, however, the present system may be used by eliminating the fluidreservoirs altogether, where microdermabrasion is performed in a “drystate” and first fluid delivery line 238 is simply left open toatmosphere, with or without a filter or valve, or both, for adjustingthe amount or flow rate of air that is allowed into the first fluiddelivery line. Similarly, dry or externally lubricated vacuum massage oftissue may be accomplished by tip 234 having a smooth surface.

A feature of the system is that it delivers fluids directly to thepatient's skin while simultaneously exfoliating the skin. In anembodiment, the system uses a variety of specially formulated solutionsto provide, for example, treatment for hyperpigmentation, dehydration,acne, and photodamage. Patients receive the most benefit when fluids areused to treat their skin-specific conditions that have specifically beentested and approved for use with the system. These fluids also provide aconsistent level of quality. Furthermore, these fluids are tested in thesystem to ensure that they do not clog the system.

Unapproved fluids may not have been tested and have an uncertainquality. They may fail certain quality standards. Unapproved fluids, forexample, may not contain active ingredients, may contain an insufficientquantity of active ingredients, may contain entirely incorrectingredients, may contain improper proportions of ingredients, or mayeven contain hazardous ingredients. A patient who receives unapprovedfluids as part of their microdermabrasion treatment may suffer dangerousconsequences to their health, such as unexpected side effects, rashes,allergic reactions, a worsening of their skin condition, or otherproblem. Unapproved fluids, because they have not been tested in thesystem, may also clog the system.

In a specific implementation, the system includes a mechanism forextracting matter from formations on the skin, including comedones(e.g., blackheads or whiteheads), papules (e.g., pinheads), pustules(e.g., pimples), and cysts. In a specific implementation, the systemincludes a skin incision mechanism to cut the top of the formation(e.g., top of comedone) using the hand piece. Specifically, a user canpress a button or engage a mechanism that allows for a shallow thin cutin the top of the area of skin that allows the hand piece to remove thecomedone. This feature allows for improved extraction during amicrodermabrasion procedure.

In a specific implementation, the system includes a release mechanismfor a treatment tip of the handpiece. In specific implementations, apost that the treatment tip (e.g., bristled brush, abrasive pad coatedwith diamond particulates or dust, or others) inserts upon is mounted ona spring which would lock in place once depressed by a user. A tipholder is inserted over the tip for using during a microdermabrasionprocedure. Once the procedure is done, a button located on the handpiececan be depressed, which releases the spring and causes the treatment tipto eject. The tip holder can also eject along with the treatment tip.

FIG. 3 shows a specific implementation of a hand piece 120. The handpiece has a handle portion 303 and a tip portion 307. The handle portionis connected to the tip portion, which is at a distal end of the handpiece. At an opposite end to where the handle is connected to the tip,the handle has two ends, each connected to tubing. In a specificimplementation, a first tubing 238 connects to a first end of the handleand conducts fluid to and through an internal channel (not shown) in afirst arm 318 b of the handle. A second tubing 202 connects to a secondend of the handle and conducts fluid to and through an internal channel(not shown) of a second arm 318 b of the handle. Arms 318 a and 318 bconnect and join (e.g., merge) into a central handle section 305 of thehandle.

The tip portion includes a treatment tip 234 and a tip holder 232. In aspecific implementation the tip holder holds the treatment tip. At atissue-facing end of the tip holder, the tip holder includes an opening236, through which a portion of the treatment tip is exposed. Theopening can contact a targeted area of skin and draw up a centralportion of the targeted area of skin to come into contact with thetreatment tip.

Fluid from tubing 202 and 238 pass through internal passage waysconnected at the ends of the handle, pass through arms 318 a and 318 band central handle section to the tip. The fluids can include liquids orgases, or both. For example, tubing 238 may be used to deliver liquid tothe tip, while tubing 202 may be used for suction (e.g., vacuum tube) todraw waste materials (e.g., abraded skin particles and fluids) away fromthe tip.

In a specific implementation, a length of the central handle section andthe arms is longer than the tip portion. Between arms 318 a and 318 b isa gap 322. In FIG. 3, this gap has generally an oval shape and is openat a point 324 between the two arms. In other implementations, the shapeof the gap can vary such as a circle or an ellipse. A width from arm toarm (along the z-axis, and parallel to a front surface of the tip) canvary at various points within the gap. A maximum or greatest width fromarm to arm is wider than a width of the central handle section. Forexample, a maximum width can allow a user to insert easily at least onefinger or maybe two or more (e.g., index or middle finger, or both)through the gap.

A length of the gap (parallel to a longitudinal axis of the centralhandle section) extends from a first gap end 320 to a second gap end324. Typically, the first gap end is closed while the second gap end isopen. The width from arm to arm increases in a first direction from thefirst gap end to a point between the first gap end and the second gapend. At this point, the width of the gap is maximum width from arm toarm. The width decreases in the first direction from the point ofmaximum width to the second gap end. The shape of the gap can allow auser to easily keep at least one finger through the gap, and to controlthe hand piece (e.g., pulling away from the skin, and gliding the handpiece across the skin) without the fingers slipping out of the gap atthe open end of the second gap end.

The arms are joined together at the central handle section. Typicallythe central handle section has a greater cross sectional area than eachof the arms individually. An exterior surface of the central handlesection is generally rounded, but can include a flattened finger region322. This flattened finger region 322 can include a concave section thancan conform to for example, a pad of a finger.

In a specific implementation, the finger region is positioned on asurface of the central handle section that is coplanar with an areadefined by the gap between the two arms. For example, the finger regionis symmetrical with respect to a longitudinal plane of symmetry of thecentral handle section. In other implementations, the finger region maybe offset (e.g., shifted to the left or to the right of the plane ofsymmetry).

The finger region can be nearer to the tip of the hand piece to allowfor control. For example, a user grips close to the tip of the handpiece while gliding the hand piece across a patient's skin. Theproximity to the area to be treated can allow the user to make fine andcontrolled movements with the hand piece.

In a specific implementation, the hand piece has a central handlesection which facilitates grasping by a user. The hand piece includes atip portion at a distal end of the central handle section. A tip holder232, in a specific implementation, holds a bristled tip 234. In otherimplementations, the tip may not be a bristled tip. Instead, other typesof tips may be used including, for example, tips with abrasiveparticles, abrasive disks, tips without bristles, and tips with smoothsurfaces.

The dimensions of the central handle section can vary depending on thesize of the user's hand, the handedness of the user, the circumstancesof use, personal preference, comfort, and other factors. For example,users with small hands require a handle that has an appropriately smallgirth or circumference (i.e., slimmer) to allow for a comfortable grip.Similarly, a length of the handle can be shortened, to allow the user'sfinger or fingers to rest comfortably near the tip of the hand piece. Inother cases, the handle can be longer and have a larger girth orcircumference.

In implementations, as shown in FIG. 3, the central handle section iscylindrical. A cross section of this handle will have a circular shape.In other implementations, the handle is not a cylinder. A cross sectionwill have another shape (e.g., triangle, square, rectangle, pentagon,hexagon, octagon, oval, or ellipse).

In a specific implementation, the central handle section has a lengthfrom about 1.5 inches to about 3 inches. In another implementation, thecentral handle section has a shorter length from about 0.5 inch to about1 inch. A shorter handle can provide more control that a hand piece witha longer handle. For example, the user's fingers can grip the hand piececloser to the tip with the short handle. Furthermore, a hand piece witha longer handle can be heavier and more cumbersome to use. However, auser with large hands may prefer such a hand piece because it will bemore comfortable to use than a hand piece with a short handle.

In a specific implementation, the first and second arms form a concavegap, with an open end having an opening that faces away from the tip ofthe hand piece. A user can insert one or more fingers (e.g., only theindex finger, the index finger with the middle finger, only the middlefinger, the index finger with the middle finger and ring fingers, or allthese fingers with the pinky finger) through the opening to rest one ormore fingers on a closed end of the concave gap, opposite the open end.The point at which the arms are joined together at the central handlesection can be referred to as a fork, branching point, groove, recess,cradle, base, or intersection.

In a specific implementation, as shown in FIG. 3, the first and secondarms are curved about an axis perpendicular to a longitudinal axis ofthe central handle section. The first and second arms each terminate atfirst and second ends, to form a concave gap with an opening. Theconcave gap can have a length that extends from the closed end to theopen end of the gap. For example, if the gap has a short length, the gapwill be more shallow than if the gap has a longer length. The first andsecond legs can have the same length, or different lengths from eachother. For example, the first leg can be longer than the second leg sothat the first leg can provide more support for a user's hand.

As discussed above for FIG. 2, a first fluid delivery line 238 connectsthe hand piece 120 to a fluid reservoir 228. The fluid delivery lineconnects to the hand piece at one of the first or second arms via afirst opening 310 a. A vacuum line 202 connects to the hand piece at theother arm via a second opening 310 b. The fluid delivery line and vacuumline include tubing that delivers treatment fluids to the hand piece,and draws waste materials (e.g., abraded skin particles and optionally,fluids) away from the hand piece, respectively.

This positioning of the tubing, at the end of the hand piece away fromthe tip, keeps the tubing from interfering with the user's operation ofthe hand piece at the tip. This allows the user's fingers the freedom tograsp the handle portion without being crowded by openings, ports, ortubing. Furthermore, the tubing will not interfere with the patient orthe patient's skin, by dragging along or brushing against the skin.

In a specific implementation, ends of the first and second arms areconnected to form a closed polygon shape. For example the polygon can bein the shape of a circle, an oval, or any other closed shape (e.g.,ellipse, square, rectangle, triangle, or trapezoid). The user can insertone or more fingers (e.g., the index finger, middle finger, ring finger,pinky finger, or any combination of these) through the polygon to usethe hand piece. This configuration can provide additional support forthe top side of the user's hand (e.g., the area around the knuckle ofthe fingers). In this closed configuration, the vacuum line and fluiddelivery line can connect to the hand piece at any point on the polygonor along the central handle section. For example, one or more openingsor ports are positioned on the polygon to connect the fluid deliveryline and vacuum line to the hand piece.

In a specific implementation, the gap between the arms can be a curvedshape. In implementations, the closed end of the gap is narrow, so thatonly a single finger fits comfortably therein (e.g., the index finger orthe middle finger). For example, a base of the index finger can rest atthe closed end, a bottom of the index finger rests on the centralhandle, and the thumb and middle finger can also rest on the centralhandle to grip the hand piece. In another implementation, a user caninsert the middle finger into the opening, rest the base of the middlefinger at the closed end of the gap, and rest the bottom of the middlefinger on the central handle. In other implementations, the closed endcan be more wide, to accommodate more than one finger (e.g., one, two,three, or four fingers).

In a specific implementation, the gap is formed in a proximal end,opposite the tip, of the central handle section. For example, theproximal end of the handle includes an indentation (or groove, recess,or cutout), which provides a base for the user's finger or fingers torest in.

In other implementations, the first and second arms are not curved.Rather, the first and second arms extend horizontally away from eachother, forming a bar that is transverse to the central handle section.In this configuration, the user rests one or more fingers on the bar,which supports the bottom of the one or more fingers.

In a specific implementation, the first and second arms are coplanarwith the central handle. In other implementations, the arms are notcoplanar and can be angled with respect to the central handle. Forexample, an angle between a plane of the arms and that of the elongatedhandle can range from about 130 degrees to about 179 degrees. Such anangle in the hand piece can allow the user to hold and use the handpiece in different positions, and at different angles.

In implementations, the first and second arms are symmetrical about alongitudinal axis of the central handle. Further, the girth orcircumference of each of the arms can be the same or similar. Asymmetrical configuration can provide a balanced feel for the user.

In other implementations, the arms are asymmetrical and can each have adifferent shape, dimension, girth, or circumference from the other arm.For example, the first arm can have a wide curvature near the closed endof the gap while the second arm has a narrower curvature. One arm can belonger than the other, so that the longer arm can extend around more ofa user's hand to support it. One arm can have a greater girth orcircumference (i.e., thicker) than the other arm in order to fit in anaturally larger gap between fingers. For example, the gap between thethumb and index finger is naturally a larger gap than the gap betweenthe index finger and middle finger, or the gap between the middle fingerand the ring finger. Therefore, an implementation of the hand piece caninclude a first arm that is thicker than a second arm. Thisconfiguration can be more comfortable to use.

In specific implementation, the second arm of the hand piece, having avacuum tubing extending therethrough, has a maximum diameter that isgreater than a maximum diameter of the first arm having a fluid deliverytubing.

Many other implementations are possible. The dimensions may varyconsiderably depending on the size of the user's hand, the handedness ofthe user, how the hand piece is to be used, comfort of the user, otherfactors, or a combination of these. For example, users with small handswould require a small hand piece with a shorter elongated handleportion, and slim arm portions. In yet another example, the dimensionsof the hand piece are tailored for users who are either right-handed orleft-handed.

In a specific implementation, the central handle section includes anindentation 322 (or a depression, notch, or groove) positioned on thehandle to allow the bottom side of the index finger to rest in. Theindentation can be a circular, oval-shaped, oblong-shaped, or anothershape to conform to the contours of the index finger. In otherimplementations, the indentation can include a textured pad to provideadditional grip for the index finger. For example, the pad can include arubber material with raised rails or other projections that provide apadded and slip-resistant surface for the user to grip. In otherimplementations, the projections are formed in a raised pattern on thepad. In yet another implementation, the pad includes depressions orgrooves in the pad.

In a specific implementation, a rubber sleeve is placed over the centralhandle. The rubber sleeve provides a secure surface for the user tograsp. The surface of the sleeve can also be textured, knurled, or both,in order to provide a slip-resistant surface.

The central handle can include one or more additional indentations forother fingers (e.g., the thumb, and middle finger) to rest in. These canbe positioned on side surfaces of the central handle. These indentationscan also have textured grip pads for additional support. In otherimplementations, the indentation is omitted from the central handle,which provides a smooth surface for the user's hand.

In a specific implementation, to perform microdermabrasion, a user holdsthe hand piece and applies the treatment tip to a patient. In a specificimplementation, the user rests the base of the index finger at theclosed end of the gap, where the first and second arms join with thecentral handle. The closed end supports the base of the index finger,while other fingers can rest on the central handle. The handle can havea length that is about as long as, or longer than, the length of theindex finger so that the index finger can rest and extend along thehandle. The user can grip the handle with the tips of the index finger,thumb, and middle finger.

In a specific implementation, the first and second arms are positionedto curve around either side of the index finger. This curvature createssupports for the base of the index finger, and prevents the finger fromslipping while the user uses the hand piece. The opening of the gapallows the user to easily insert and remove the index finger (or otherfingers, or a combination) through and from the hand piece.

Microdermabrasion treatment sessions can last for long durations oftime. Throughout the day, the user's hand can tire easily from grippingthe handle for several hours at a time. With the system, the base of thefinger or fingers is supported by the gap formed by the first and secondarms. This configuration provides the user with control over the handpiece. The fingers are positioned close to the tip of the hand piece,which can allow the user to make small, fine movements. Theconfiguration also allows the user to focus less on tightly gripping thehandle with the tips of the fingers. Thus, the user will be comfortableusing the hand piece, even after several hours of use.

There are numerous techniques on how a user can apply the hand piece andtreatment tip to perform microdermabrasion. For example, one approach isdraw the tip across the skin of the patient in a single direction,generally away from the center or nose of the patient's face (whenworking on the patient's face). Another approach is to use a scrubbingmotion, moving the tip back and forth on the face.

One of ordinary skill in the art will appreciate that many differentshapes and materials may be employed for the hand piece and the systemis not to be limited to an elongated, substantially cylindrical handleas shown. In the example of FIG. 3, the central handle section and firstand second arms are made of plastic, such as nylon or other plastichaving sufficient toughness and mechanical strength, but may also bemade of metal, such as stainless steel or aluminum, for example, orceramics or composites such as carbon fiber. The handle may include acombination of materials. For example, a rubber sleeve may be placedover the central handle which may be made of plastic. The rubber sleeveprovides a secure surface for a user to grasp. The surface of the handlemay also be textured, knurled, or both in order to provide aslip-resistant surface.

Fluid delivery line 238 may be flexible and may be made of polyvinylchloride (PVC) or other compatible plastic or polymer, for example.Similarly, all other vacuum lines (e.g., vacuum line 202) describedherein are flexible to afford maneuverability to hand piece 120 and maybe made of PVC or other compatible plastic.

These and other components of a microdermabrasion hand piece arediscussed in U.S. Pat. No. 6,695,853, filed Nov. 21, 2001, and issuedFeb. 24, 2004 which is incorporated by reference. This patentapplication incorporates by reference U.S. Pat. No. 6,695,853, filedNov. 21, 2001, and issued Feb. 24, 2004; U.S. Pat. No. 7,658,742, filedMar. 19, 2003, and issued Feb. 9, 2010; U.S. Pat. No. 7,951,156, filedNov. 22, 2006, and issued May 31, 2011; U.S. Pat. No. 8,236,008, filedFeb. 29, 2008, and issued Aug. 7, 2012; U.S. Pat. D648,025, filed Feb.29, 2008, and issued Nov. 1, 2011; U.S. Pat. D616,094, filed Jul. 29,2008, and issued May 18, 2010; U.S. Pat. D612,939, filed Jul. 29, 2008,and issued Mar. 30, 2010; and U.S. patent application Ser. Nos.12/197,047, 12/197,065, and 12/197,075, filed Aug. 22, 2008; Ser. No.13/569,022, filed Aug. 7, 2012; and Ser. No. 12/645,210, filed Dec. 22,2009. Any feature or combination of features described in the aboveapplications can be used in combination with (or in substitution orreplacement of) features described in this application.

FIG. 4 shows a cross-sectional view of hand piece 120. For use inmicrodermabrasion, the hand piece is positioned such that tip holder 232contacts the skin surface to be microabraded. Vacuum source 226 (seeFIG. 2) is turned on to establish a vacuum within the system. The orderof positioning and turning on the vacuum source 226 is not critical asit can be turned on prior to contacting the tip holder 232 to the skin.

With reference to FIG. 2 and FIG. 4, when the vacuum source is turnedon, a targeted area of the skin is drawn up into opening 445 and acentral portion of the targeted area of skin is drawn into contact withbristled tip 234. At the same time, fluids in fluid reservoir 228 aredrawn through fluid delivery line 238 and into the hand piece throughthe first arm 318 a. The fluids flow through the fluid delivery line,positioned in a passageway 405, through the bristled tip, through anopening on the bristled tip and finally out opening 445 where the fluidstreat the skin.

The fluids then reenter opening 445 and pass through a vacuum created ina space 440. The fluids now carry with it the exfoliated skin particlesand any other waste that was removed through the microdermabrasionprocess. The fluids travel within vacuum line 202, positioned in apassageway 407, and are collected in the collection reservoir 208. Thevacuum created allows there to be little to no spent fluid or debristhat must later be cleaned from the skin.

As the user glides the tip holder over the skin, the bristled tip isscraped over the skin wherein microdermabrasion of that portion of theskin is performed.

In a specific implementation, a male to female connection between thebristled tip and the central handle 305 acts as a helpful guide toproperly position the bristled tip to the handle. In a specificimplementation, a distal end 450 includes a cavity that forms a femalecore which fits onto a protrusion 455 of the bristled tip. The bristledtip may then include a male protrusion, opposite the bristles, thatforms a male core which fits into the female core of the distal end. Thebristled tip fits onto the distal end using, for example, aninterference or press fit. However, in other implementations, otherattachment mechanisms may be used. For example, the distal end mayinclude a tab to create a snap fit between the distal end and theprotrusion of the bristled tip. As another example, the bristled tip maythread onto the distal end.

In other implementations, as shown in FIG. 5, the bristled tip includesa cavity 505 that forms a female core which fits onto a distal end of acannula 300. That is, the distal end forms a male core which fits intothe cavity.

The bristled tip also includes an internal passageway 460, which iscoupled to a first opening at one end of the bristled tip and a secondopening at the opposite end of the bristled tip. This allows fluids topass through the bristled tip using the passageway 460, and eventuallyexiting at the opening.

Tip holder 232 fits over the bristled tip and onto vacuum head base 465.In a specific implementation, one or more O-rings 470 or other sealingmembers (e.g., gasket) may be provided between the vacuum head base andthe tip holder to facilitate the pressure tight seal. The tip holder maybe friction fit, provided with threads, or both, or another attachmentmeans may provide a pressure tight fit between the components. Forexample, a snap fit such as an annular snap fit may be used.Alternatively, the tip holder may be integrally machined or molded withthe vacuum head base. In another implementation, the bristled tip may beintegrally machined or molded with the tip holder.

FIG. 5 shows another cross-sectional view of a specific embodiment ofthe hand piece. When a vacuum source (see reference 226 in FIG. 2) isturned on, fluids are pulled through the fluid delivery line of apassageway, positioned in the first arm of handle 305. The fluids flowthrough the vacuum head base 465, the bristled tip 234, and exit at anopening 516 on the bristled tip. The fluids exit at the opening andtreat the skin. A vacuum created pulls the fluids back into the tipwhere the fluids move past the outside of bristled tip. The fluids arepulled into a vacuum line positioned in a passageway of the second armand are collected in collection reservoir (see reference 208 in FIG. 2).

FIG. 6 shows a perspective of the bristled tip and central handle 305 Ina specific implementation, the bristled tip includes support ribs 600 a,600 b, and 600 c (not visible). When the tip holder is fitted over thebristled tip, the support ribs connect with the inner surface of the tipholder. The support ribs help to support and stabilize the bristled tipin the tip holder. The support ribs help to ensure that the bristled tipis properly aligned in the holder. Fluid can flow through the tip, treatthe skin, and be vacuumed back into the tip holder.

In a specific implementation, the support ribs are attached such thatthey are initially flush with a front face of the bristled tip. However,in other implementations, the support ribs may be attached such thatthey are offset from the front face of the bristled tip. Support ribsextend outwardly and then turn to extend longitudinally down the lengthof the bristled tip and at an angle such that their tips are splayed.The angle may match the interior surface angle of the tip holder. Thisallows support ribs to contact the inner surface of the tip holder forsupport and stabilization.

When the tip and tip holder are assembled together, the support ribstouch an inside surface of the tip holder and help form annular space640. Specifically, the annular space is formed between the inner surfaceof the tip holder and exterior surface of bristled tip. Generally, theless volume or space taken up by the ribs enlarges the volume of theannular space.

In a specific implementation, fluids and abraded tissues are vacuumedback into the hand piece through the annular space. This annular spacecreates an annular vacuum region that surrounds the passageway of thehand piece where fluids flow to the tip. The volume of the annular spacemay vary depending on the specific design, but generally, larger volumeannular spaces will help prevent potential blockage or other similarproblems, especially when compared to pores or other structures thatwill restrict flow more.

The support ribs also help to ensure that the bristled tip is properlyaligned so that fluid can flow through, treat the skin, and be pulledback into the tip holder.

In a specific implementation, the support ribs are positioned at equaldistances from each other around the bristled tip. For example, thesupport ribs may be placed at 60 degree angles from each other as shown.However, in other cases, the support ribs may not be equally positionedin relation to each other. It should be appreciated that any arrangementor number of support ribs (including no support ribs) is possible solong as the fluids are able to pass from the front of the tip holder tothe back of the tip holder.

Consequently, a flange, or a portion of a flange may be used between thebristled tip and the tip holder either with or without one or moresupport ribs. For example, where a flange completely encircles thebristled tip, the flange may contain one or more openings which allowfluids to pass from the front of the tip holder to the back of the tipholder.

In a specific implementation, there may be a total of three support ribsas shown in FIG. 6. However, in other implementations there may, forexample, be four support ribs. In yet another implementation, there maybe no support ribs, one, two, five, or more than five support ribs.

In a specific implementation, the tips of the support ribs may havebeveled edges. These beveled edges allow the tip holder to easily slideon and off over the bristled tip.

In a specific implementation, the support ribs are molded or machined asan integral part of the bristled tip as shown. In other implementations,the support ribs are molded or machined as an integral part of the tipholder. For example, the interior surface of tip holder may contain oneor more protruding support ribs that contact bristled tip when the tipholder is placed over the bristled tip. In yet another implementation,there may be a combination of support ribs which may be molded ormachined as an integral part of the tip holder and bristled tip.

The tip holder is smooth surfaced and adapted to glide over the skin asfluids (e.g., lotions, conditioners, vitamins, oils) exit the hand pieceto treat the skin. The tip holder and treatment tip (e.g., bristled tip)may, for example, be impregnated with polytetrafluoroethylene (PTFE),treated with wax, or include other hydrophobic ingredients to ensurethat fluids do not adhere to the tip holder and treatment tip.

The tip holder and treatment tip of the hand piece may be made of metal(e.g., stainless steel, aluminum, titanium, brass) or plastic such asnylon, thermoplastics, polyethylene, polycarbonate, acrylonitrilebutadiene styrene (ABS), or Delrin. Glass, such as Pyrex, for example,may also be used. The tip holder may be, although not necessarily,transparent or translucent. A transparent tip holder may allow bettervisualization by the operator during use.

The treatment tip and tip holder of the system (in the variousembodiments described and shown in this application) are designed to beremovable and installable by the user. Further, the user can dispose ofused or old tips or holders, or both, and easily replace them with new(or clean) ones. Also, the user can remove the tips to clean them orclean the passages to ensure the flow, vacuum and fluid, are clear, sothat the microdermabrasion device will be operating at full efficiency.Also, in an embodiment, the tip and tip holder are designed to be lowcost (e.g., made of less expensive materials) and disposable.

The design may be such that the tip wears faster than the tip holder. Sousers may stock up with greater numbers of replacement tips thanholders. When a tip wears out, the user replaces the tip without needingto replace the holder. This is analogous to the situation of replacingan ink refill insert of a pen. For example, the holder may be replacedonce for every seven (or other number) of tips. This lowers the cost ofuse for users, because the tip, which needs more frequent replacementbecause it is subject to more wear and tear, is replaceable separatelyfrom the tip holder.

FIG. 7 shows a perspective of a hand piece without a bristled tip and atip holder attached. The distal end of the cannula 300 and the vacuumhead base 465 shown in greater detail. In this implementation, asdescribed in the description for FIG. 5 above, to attach the bristledtip to the vacuum head base, the bristled tip (not shown) includes acavity that forms a female core which fits onto the distal end of thecannula.

When a vacuum source (see reference 226 in FIG. 2) is turned on, fluidsare pulled through the fluid delivery line of a passageway, positionedin the first arm of the central handle. The fluids flow through thevacuum head base, through the fluid delivery line positioned in a firstpassageway of the vacuum head base, and are delivered to the bristledtip via a first opening 705. The fluids exit bristled tip and treat theskin. A vacuum created by a vacuum line pulls the fluids back into thetip where the fluids move past the outside of bristled tip. The fluidsare pulled from the bristled tip into a vacuum line, through a secondopening 710 of the vacuum head base. The fluids then flow through avacuum line positioned internally in the vacuum head base, the elongatedhandle, and the second arm of the hand piece, out of the hand piece to acollection reservoir (see reference 208 in FIG. 2).

In a specific implementation, the central handle includes an indentation422 (or a depression, notch, recess, or groove) positioned on theelongated handle to allow the bottom side of the index finger to restin. The indentation can be a circular, oval shaped, oblong shaped, or acombination of these to conform to the contours of the bottom side ofthe index finger. In the implementation shown here, a first end of theindentation that is closer to the tip of the hand piece is rounded, anda second end, opposite of the first end, is tapered. The indentationincludes raised side walls or perimeter surrounding the indentation tokeep the index finger from slipping out. In other implementations, theindentation can include a textured pad to provide additional grip forthe index finger. The handle can include one or more additionalindentations for the thumb and middle finger to rest in. Theseindentations can have textured grip pads for additional support.

FIG. 8 shows a specific implementation of a hand piece with a bristledtip placed onto a cannula. The bristled tip includes six groups ofbristles. In another specific implementation there may be four groups ofbristles. In other implementations, there may be just one group ofbristles, two, three, five, seven, eight, nine, ten, eleven, twelve, ormore than twelve groups of bristles.

The groups of bristles form a ring around an opening 805 through whichfluid flows out. The bristles separate the opening from the skin so thatfluid can flow out of the opening. In a specific implementation, theopening is on the same plane as face 810 of the bristled tip. In otherimplementations, the opening may be on a different plane. For example,the opening may be recessed into the face or may protrude out from theface. In an implementation where the opening protrudes out, the fluidsexit the opening closer to the skin. This helps to ensure that the skinis treated with fluids before the fluids are pulled back (or suctioned)into the tip holder.

In the implementation shown in FIG. 8, the groups of bristles areequally spaced from each other, and surround the opening. However, inother implementations, the groups of bristles may not be equally spacedfrom each other, may only occupy a certain region of the treatment head,or both. For example, in a specific implementation, bristles may onlyoccupy the top half of the bristled tip. In this specificimplementation, the bristled tip may be intended to travel in a specificdirection over the skin. For example, if the skin is particularlysensitive then the direction of travel may be such that the leadingedge, i.e., the edge that first contacts the skin, is the edge that doesnot include the bristles. This allows the fluids to contact the skinbefore the bristles to provide, for example, lubrication or numbingagents. The trailing edge, i.e., that edge that does include thebristles can then contact the patient's skin to provide themicrodermabrasion.

In yet another implementation, the opening may be located at a differentregion of the bristled tip, such as near an edge of the bristled tip.Furthermore, there may be more than one opening through which fluidflows out of. For example, there may be two, three, four, five, six,seven, or more than eight openings for fluid to flow out of. In aspecific implementation, these openings may then surround the group orgroups of bristles.

In a specific implementation, the bristles are distributed along aplanar surface of bristled tip. However, in other implementations, thesurface may not be planar. For example, the surface may be convex orconcave. The bristles may also be distributed over a helical surface.These nonplanar surfaces may be used, for example, on skin surfaces thatare not planar such as the edge of patient's jawline or the curvedsurface of a patient's forehead. Bristles distributed on a nonplanarsurface may be better able to fully contact the patient's skin whilemaintaining the same level of pressure across all the bristles.

Other characteristics of the bristled tip are discussed in U.S. Pat. No.8,236,008, which incorporated by reference in its entirety.

Although a bristled treatment tip is discussed, a wide variety ofabrasive tips may be used. This may include, for example, differenttypes of abrasive elements such as bristles, meshes, abrasive particles,or combinations of these. Abrasive tipped devices or rotating brushesand cylinders coated with abrasive particles, can be used to remove skinlayers. In a specific implementation, as shown in FIGS. 16A-16C, anabrasive treatment tip is coated with diamond dust on a front surfacethat faces the skin. The tip can rotate. Many different sizes of tipsare available. Thus, small skin surfaces such as the cheek, forehead,chin, and nose may be treated. Large surfaces such as the back, arms, ortorso may also be treated.

FIGS. 9A and 9B show a comparison of specific implementations of thehand piece. FIG. 9A shows a hand piece that includes a shorter elongatedhandle portion than that shown in FIG. 9B. With a shorter handle, a usercan grip the hand piece closer to the tip. Thus, a shorter handle canprovide the user with more control over the hand piece. Inimplementations, a length of the shortened elongated handle can rangefrom about 0.5 inches to about 1 inch. In other implementations, alength of the longer elongated handle can range from about 1.5 inches toabout 3 inches.

FIG. 10 shows a perspective view of an implementation of the hand piecethat includes a long central handle section as described above for FIG.9B. The structure of the hand piece is the same as the implementationshown in and described above for FIG. 3. In this implementation with along handle, indentation 322 can be longer than the indentation in ahand piece with a short central handle. Users with larger hands mayprefer to use this implementation where the handle can support more ofthe index. The indentation can be a circular, oval-shaped, oroblong-shaped to conform to the contours of the index finger. In otherimplementations, the indentation can include a textured pad to provideadditional grip for the index finger. The handle can include one or moreadditional indentations for the thumb and middle finger to rest in, onpositioned on side surfaces of the central handle. These indentationscan have textured grip pads for additional support.

FIG. 11 shows a top view of a specific implementation of a hand piece.The indentation has an oblong shape to cradle a length of the bottomside of the user's index finger. The indentation can be of any shape andsize. For example, the indentation can be a circular indentation tosupport the bottom of a tip of the index finger only.

FIG. 12 shows a bottom view of a specific implementation of a handpiece. The bottom side can be smooth, without any indentations orgrooves.

FIG. 13 shows a bottom perspective view of a specific implementation ofa hand piece. The central handle includes side surfaces 1305 that aresubstantially flat, where the tips of the middle finger and thumb canrest. The tips of these fingers can rest comfortably on these sideswhile the user is using the hand piece. A side can support the bottom ofthe user's middle finger or thumb. The handle can include projections1310 (e.g., guards, or stops) to prevent the thumb and middle fingerfrom slipping downward while the user is pressing down on the handpiece.

FIG. 14 shows another bottom view of a specific implementation of a handpiece.

FIG. 15 shows a side view of a specific implementation of a hand piece.

FIG. 16A shows an illustration of a specific embodiment of a treatmenttip. The treatment tip can be an abrasive tip 24 coated with particlessuch as a layer of diamond dust 80. In a specific implementation, theabrasive coated tip (e.g., a diamond head) can be removed from theremainder of the tip. This feature is show by dashed line 82. In otherimplementations, the abrasive head is not removable and remainsintegrated with the treatment tip of the handpiece.

In use, a treatment head 20 is placed over the treatment tip. When avacuum source is turned on, a targeted area of the skin is drawn up intoopening 20 a and a central portion 2 of the targeted area of skin isdrawn into contact with the surface with diamond-coated abrasive orother abrasive particles of the treatment tip. Fluids that carry with itthe exfoliated skin particles and any other waste that is removed asthey pass through a vacuum 22 created in the tip of the handpiece.

FIG. 16B shows an example of a specific embodiment of a treatment tip(e.g., diamond-coated tip) in use.

FIG. 16C shows another example of a specific embodiment of a treatmenttip in use.

This description of the invention has been presented for the purposes ofillustration and description. It is not intended to be exhaustive or tolimit the invention to the precise form described, and manymodifications and variations are possible in light of the teachingabove. The embodiments were chosen and described in order to bestexplain the principles of the invention and its practical applications.This description will enable others skilled in the art to best utilizeand practice the invention in various embodiments and with variousmodifications as are suited to a particular use. The scope of theinvention is defined by the following claims.

The invention claimed is:
 1. A handpiece for a microdermabrasion systemcomprising: a tip, at a distal end of the handpiece; a first portion ofa handle of the handpiece coupled to the tip; a second portion of thehandle, coupled to the first portion; a third portion of the handle,coupled to the first and second portions, wherein the first and secondportions are separated by a first distance between them; a first port,coupled to an end of the second portion, wherein the first port couplesto a first internal channel passing through the second and firstportions of the handle, and the first internal channel is coupled to afirst opening at the tip; a second port, coupled to an end of the thirdportion, wherein the second port couples to a second internal channelpassing through the third and first portions of the handle, and thesecond internal channel is coupled to a second opening at the tip. 2.The handpiece of claim 1 wherein the first distance between the firstand second handle portions is greater than a width of the first portionof the handle.
 3. The handpiece of claim 1 wherein the handpiece issymmetrical about an axis line running between the first portion of thehandle and between the second and third portions of the handle.
 4. Thehandpiece of claim 1 wherein the first port is to be coupled to a vacuumsource, the second port is to be coupled to a fluid source, and a firstflow through the first internal channel is in a direction opposite of asecond flow through the second internal channel.
 5. The handpiece ofclaim 1 wherein the first distance between the second and third handleportions increases from a first position, where the first and secondhandle portions are joined, to a second position, proximal to the firstposition, and the first distance between the second and third handleportions decreases from the second position to a third position,proximal to the second position.
 6. The handpiece of claim 5 wherein thesecond handle portion is curved, and the third handle portion is curved.7. The handpiece of claim 1 wherein a length of a periphery of the firsthandle portion is greater than the second handle portion.
 8. Thehandpiece of claim 4 wherein the first opening of the tip is positionedcloser to a periphery of the tip than the second opening.
 9. Thehandpiece of claim 1 wherein the first handle portion comprises a grippad for a user's finger, inserted between the second and third handleportions.
 10. The handpiece of claim 1 wherein the first, second, andthird handle portions comprise polymer material.
 11. The handpiece ofclaim 1 wherein the first, second, and third handle portions comprisetacky coating on a base material.
 12. The handpiece of claim 1 whereinthe tip is removable and replaceable.
 13. The handpiece of claim 1wherein the second handle portion comprises a larger length of about itsperiphery than the third handle portion.
 14. The handpiece of claim 1wherein the first distance between the second and third handle portionsincreases from a first position, where the first and second handleportions are joined, to a second position, proximal to the firstposition, the first distance between the second and third handleportions decreases from the second position to a third position,proximal to the second position, a length of a periphery of the firsthandle portion is greater than the second handle portion, and the lengthof a periphery of the first handle portion is greater than the thirdhandle portion, the first port is to be coupled to a vacuum source, thesecond port is to be coupled to a fluid source, and a first flow throughthe first internal channel is in a direction opposite of a second flowthrough the second internal channel, and the first opening of the tip ispositioned closer to a periphery of the tip than the second opening.